Air filter 1. Hose clamp; 2. Air duct hose to the throttle control unit "J338". When installing, observe the marking (the arrow faces the bolt of the throttle control unit "J338"); 3. Replacement air filter element. Always use the original filter insert, clean the fine filter as well (if installed); 4. Air duct. Secured to the top of the air filter housing. Clean the air duct from dirt and leaves; 5. Air duct. Clean the air duct from dirt and leaves; 6. Air duct, to the lock stand. Clean the air duct from dirt and leaves; 7. Rubber tip; 8. Water drain hose. Clean the hose from dirt and leaves (very important); 9. Guide for water drain hose; 10. Heated air supply line (only for countries with cold climates). Insert the heated air supply line into the air filter until it stops and turn it clockwise until it clicks; 11. Lower part of the air filter housing. Remove salt deposits, dirt and leaves from the lower part of the air filter housing. Check the drain for dirt, clean if necessary (important); 12. Securing the lower part of the air filter housing; 13. Suction hose of the secondary air pump (not installed on all cars);14. Intake air switching valve "N335" (not installed on all vehicles; valve installed but not used); 15. Bolt for air intake changeover valve "N335"; 16. Bolt; 17. Upper air filter housing. Remove salt deposits, dirt and leaves from the upper air filter housing; 18. Bolt for fastening the air filter insert